Immune Support

product on market Capsule Twinlab 🟢 Safety: 84/100
Brand: Twinlab
🟢 84/100

This product is generally safe

  • Vitamin D: 0.125mg is 1.2× the Tolerable Upper Intake Level (0.1mg)
  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 67% of ingredients have research evidence
C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Vitamin D: 0.125mg is 1.2× the Tolerable Upper Intake Level (0.1mg)
ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

2 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
67% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
500 mg (556% DV)
125 mcg (625% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 1.2× (UL: 0.1 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.125mg UL 0.1mg
45 mcg (38% DV)
✅ Within RDA (0.4× RDA of 0.12 mg) 📚 273 studies (Tier A: 9, B: 175)
RDA 0.12mg This product: 0.045mg
15 mg (136% DV)
✅ 1.4× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 15mg UL 40mg
70 mcg (127% DV)
✅ 1.3× RDA — within safe limits 📚 172 studies (Tier A: 0, B: 67)
RDA 0.055mg This product: 0.07mg UL 0.4mg
Proprietary Immune Support Blend (Combination)
100 mg

Other Ingredients

Hypromellose capsule Rice Flour Magnesium Stearate

Label Claims — Verification

❓ Nutrient
❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Directions: Take two capsules once daily (preferably with a meal) or as directed by a healthcare professional.

⚠️ Warnings & Precautions

Warning: If you are pregnant or nursing, taking any medication, or have any medical condition, consult a health care professional before use.

Keep out of reach of children.

🧪 Formulation Notes

Twinlab Immune Support formula supports innate and adaptive defenses, the two major types of healthy immune function. Innate is your body's first line of defense while adaptive is targeted and includes antibodies and other specific immune cells.

Contains vitamins C, D, K, Zinc, Selenium and our Proprietary Immune Support Blend.

Supports overall immune health

Contains vitamin c, zinc, echinacea & elderberry

Additional Information

Bottled & Produced in the USA with USA and Imported Ingredients

30-day supply Instagram @Instagram Facebook TwinlabVitamins

Product Details

UPC / SKU 0 27434 04373 1
DSLD Entry Date 2022-06-16
Product Type Other Combinations
Form Capsule
Brand Twinlab
DSLD ID 268466
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI Cochrane
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI Cochrane
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
PubMed DOI Cochrane
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
PubMed DOI
View all evidence for Vitamin C →

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